Mars Comfort-Aire Century VCD24 SA Series Installation Manual page 35

Installation and Operation Manual - VCDxxSA
SPECIFIC WIRING METHODS
WARNING
Please refer to the wiring nameplate for the wiring method. Do not connect the power cord to the
communication line, as this may damage the system.
Connection method A:
Refer to the wiring method of internal and
external machine communication and wired
controller as follows:
NOTICE
The wiring method of the thermostat and the internal machine refers to the wiring of the
non-communication scheme.
Connection method B:
To use a 24V thermostat, you need to refer to the
following wiring:
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